USGS/SLU Regional Moment Solution
NORTHERN ALASKA
12/06/24 00:03:14.77 Epicenter: 69.587 -144.295 MW 4.3 USGS/SLU REGIONAL MOMENT TENSOR Depth 15 No. of sta: 7 Moment Tensor; Scale 10**15 Nm Mrr= 2.15 Mtt=-1.70 Mpp=-0.45 Mrt= 1.86 Mrp= 1.45 Mtp=-1.57 Principal axes: T Val= 3.11 Plg=68 Azm=317 N 0.60 3 54 P -3.71 22 145 Best Double Couple:Mo=3.5*10**15 NP1:Strike=240 Dip=23 Slip= 97 NP2: 53 67 87
The figure above shows a visual representation of the style of faulting (focal mechanism)
derived from the estimated moment tensor.
Shaded areas show quadrants of the focal sphere in which the P-wave first-motions
are away from the source, and unshaded areas show quadrants
in which the P-wave first-motions are toward the source.
The dots represent the axis of maximum compressional strain
(in black, called the "P-axis")
and the axis of maximum extensional strain (in white, called the "T-axis")
resulting from the earthquake.
